I have a activerecord model with a validates :body, presence: true. When a form is filled and submited, I get {:body=>["can't be blank"]} even though the body is not actually blank. If I remove the validation from the model, and re-submit, the record is successfully created. Why is the validation saying the body field is blank when it is not blank.
The controller.
class SqlTemplatesController < ApplicationController
def create
@sql_template = SqlTemplate.new(sql_template_params)
respond_to do |format|
if @sql_template.save
format.html { redirect_to @sql_template, notice: 'Sql template was successfully created.' }
end
end
private
def sql_template_params
params.require(:sql_template).permit(:body, :path, :format, :locale, :handler, :partial)
end
end
The Model
class SqlTemplate < ActiveRecord::Base
validates :body, :path, presence: true
validates :format, inclusion: Mime::SET.symbols.map(&:to_s)
validates :locale, inclusion: I18n.available_locales.map(&:to_s)
validates :handler, inclusion: ActionView::Template::Handlers.extensions.map(&:to_s)
def to_liquid
SqlTemplateDrop.new(self)
end
def body=(text)
if self[:handler] == 'liquid'
@template = Liquid::Template.parse(text)
self[:body] = Marshal.dump(@template)
end
end
def render(options = {})
template.render options
end
private
def template
return @body unless @body.nil?
@body = Marshal.load(self[:body])
end
end
In the rails console If create a new record and set the body field to either a string body => "message body" or a liquid markup eg body => "{{body}}, it will raise the error {:body=>["can't be blank"]} but if remove the validation they work.
irb(main):016:0> a = SqlTemplate.create(:body => "{{body}", path => "mail/liquid_database_template", :format => "html", :locale => "en", :handler => "liquid", :partial => false)
(0.1ms) begin transaction
(0.1ms) rollback transaction
irb(main):016:0> a.errors.messages
=> {:body=>["can't be blank"]}
If I remove the validation and submit a form, it all works, as shown below:
Started POST "/sql_templates" for 127.0.0.1 at 2014-03-11 15:28:14 +0000
Processing by SqlTemplatesController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"GVsRbsCKSlcEMiL1AzXE0tT8LBCNhhoK6wSGzvnB80A=", "sql_template"=>{"body"=>"{{body}}", "path"=>"customer_mail/liquid_database_template", "format"=>"html", "locale"=>"en", "handler"=>"liquid", "partial"=>"0"}, "commit"=>"Create Sql template"}
#<SqlTemplate id: nil, body: nil, path: "customer_mail/liquid_database_template", format: "html", locale: "en", handler: "liquid", partial: false, created_at: nil, updated_at: nil>
(0.1ms) begin transaction
SQL (9.4ms) INSERT INTO "sql_templates" ("created_at", "format", "handler", "locale", "path", "updated_at") VALUES (?, ?, ?, ?, ?, ?) [["created_at", "2014-03-11 15:28:14.869619"], ["format", "html"], ["handler", "liquid"], ["locale", "en"], ["path", "customer_mail/liquid_database_template"], ["updated_at", "2014-03-11 15:28:14.869619"]]
(621.4ms) commit transaction
Redirected to http://localhost:3000/sql_templates/7
Completed 302 Found in 662ms (ActiveRecord: 630.9ms)
Started GET "/sql_templates/7" for 127.0.0.1 at 2014-03-11 15:28:15 +0000
Processing by SqlTemplatesController#show as HTML
Parameters: {"id"=>"7"}
SqlTemplate Load (3.1ms) SELECT "sql_templates".* FROM "sql_templates" WHERE "sql_templates"."id" = ? LIMIT 1 [["id", 7]]
Rendered sql_templates/show.html.erb within layouts/application (11.4ms)
Completed 200 OK in 52ms (Views: 46.0ms | ActiveRecord: 3.1ms)
If I add the validation back and submit it fails as shown below:
Started POST "/sql_templates" for 127.0.0.1 at 2014-03-11 14:34:22 +0000
ActiveRecord::SchemaMigration Load (0.3ms) SELECT "schema_migrations".* FROM "schema_migrations"
Processing by SqlTemplatesController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"GVsRbsCKSlcEMiL1AzXE0tT8LBCNhhoK6wSGzvnB80A=", "sql_template"=> {"body"=>"{{body}}", "path"=>"customer_mail/liquid_database_template", "format"=>"html", "locale"=>"en", "handler"=>"liquid", "partial"=>"0"}, "commit"=>"Create Sql template"}
#<SqlTemplate id: nil, body: nil, path: "customer_mail/liquid_database_template", format: "html", locale: "en", handler: "liquid", partial: false, created_at: nil, updated_at: nil>
(0.2ms) begin transaction
(0.2ms) rollback transaction
Rendered sql_templates/_form.html.erb (32.6ms)
Rendered sql_templates/new.html.erb within layouts/application (57.1ms)
Completed 200 OK in 208ms (Views: 143.0ms | ActiveRecord: 1.4ms)